Solid dispergation reinforcing agent and preparation method thereof
阅读说明：本技术 一种固体解胶增强剂及其制备方法 (Solid dispergation reinforcing agent and preparation method thereof ) 是由 曾宪达 于 2021-01-22 设计创作，主要内容包括：本发明公开了本发明提供一种固体解胶增强剂,包括如下重量份的组分：解胶剂15份-30份；具有亲水亲油基团的酯类物质10份-20份；阳离子聚合物1份-5份；聚二乙醇1份-3份。本发明的固体解胶增强剂通过采用解胶剂、具有亲水亲油基团的酯类物质、阳离子聚合物等物料复配,通过具有亲水亲油基团的酯类物质、阳离子聚合物的作用,以增强解胶剂的解胶效果,在陶瓷制备时能够降低泥浆的含水量,提高泥浆悬浮性,为陶瓷泥浆提供增强与减水效果,同时还可以增加泥浆的流动性。本发明还提供一种固体解胶增强剂的制备方法。(The invention discloses a solid dispergation reinforcing agent which comprises the following components in parts by weight: 15-30 parts of a debonding agent; 10-20 parts of ester substances with hydrophilic and lipophilic groups; 1-5 parts of cationic polymer; 1-3 parts of polyethylene glycol. The solid dispergation reinforcing agent is compounded by adopting the dispergation agent, the ester substance with the hydrophilic and lipophilic groups, the cationic polymer and other materials, and the dispergation effect of the dispergation agent is enhanced through the action of the ester substance with the hydrophilic and lipophilic groups and the cationic polymer, so that the water content of slurry can be reduced during the preparation of ceramics, the suspension property of the slurry is improved, the reinforcing and water reducing effects are provided for the ceramic slurry, and meanwhile, the fluidity of the slurry can be increased. The invention also provides a preparation method of the solid peptization reinforcing agent.)
1. The solid dispergation reinforcing agent is characterized by comprising the following components in parts by weight:
15-30 parts of a debonding agent;
10-20 parts of ester substances with hydrophilic and lipophilic groups;
1-5 parts of cationic polymer;
1-3 parts of polyethylene glycol;
the debonder is one or a composition of more than two of organic matters of sodium polyacrylate, potassium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate, sodium silicate, potassium silicate, sodium carbonate, potassium carbonate, sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium ethylene diamine tetracetate, sodium hydroxyethylethylenediamine triacetate, polyvinyl alcohol and polycarboxylic acids.
2. The solid dispergation enhancer as claimed in claim 1, wherein the ester substance with hydrophilic and lipophilic groups is prepared by mixing the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate.
3. The solid dispergation enhancer as claimed in claim 1, wherein the ester substance with hydrophilic and lipophilic groups is prepared by mixing the following components in a mass ratio of 1: 1-2 of propylene glycol alginate and dimethylaminoethyl methacrylate.
4. The solid dispergation enhancer according to claim 1, wherein the cationic polymer is one or a combination of aluminum hydroxy, zirconium hydroxy.
5. The solid dispergation enhancer as claimed in claim 1, wherein the molecular weight of the polyethylene glycol is 200-300.
6. The solid dispergation enhancer as claimed in claim 1, wherein the mass ratio of the dispergation agent to the ester substance having hydrophilic and lipophilic groups is 1: 0.8-1.
7. The solid dispergation enhancer as claimed in claim 1, wherein the mass ratio of the cationic polymer to the ester substance with hydrophilic lipophilic group is 0.1-0.5: 1.
8. the solid dispergation enhancer as claimed in claim 1, wherein the mass ratio of the polyethylene glycol to the ester substance having the hydrophilic-lipophilic group is 0.1-0.5: 1.
9. a method of preparing a solid peptization enhancer according to any one of claims 1 to 8, comprising the following steps:
s1: dissolving polyethylene glycol in water, adding an ester substance with hydrophilic and lipophilic groups, and uniformly stirring to obtain a first mixture;
s2: adding a cationic polymer into the first mixture, and uniformly stirring to obtain a second mixture;
s3: and adding the dispergator into the second mixture, uniformly stirring, and then carrying out spray drying to obtain the solid dispergation reinforcing agent.
10. The method for preparing the solid peptization enhancer of claim 9, wherein in step S1, the stirring speed is controlled to be 10r/min to 20r/min, and the stirring time is 30min to 50 min; in step S2, the stirring speed is controlled to be 20r/min-30r/min, and the stirring time is 15min-30 min; in step S3, the stirring speed is controlled at 10r/min-20r/min, the stirring time is 1min-3min, the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature is 60-80 ℃.
Technical Field
The invention relates to the technical field of ceramic industry, in particular to a solid dispergation reinforcing agent and a preparation method thereof.
Background
The ceramic dispergator is a widely used ceramic additive used in the technological processes of mud selection, pulp grinding, glaze making and the like in the ceramic industry. The ceramic dispergator has the functions of improving the fluidity of the slurry, ensuring that the viscosity is proper, the fluidity is good, the stability is good and the quality of the product is improved under the condition that the moisture content of the slurry is reduced.
The existing ceramic debonders can be roughly classified into four categories of inorganic, organic, polymeric and composite water reducing agents, wherein the most common inorganic water reducing agents are inorganic salts containing sodium ions, such as liquid sodium silicate, sodium metasilicate, solid sodium silicate, sodium carbonate, sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, crude sodium pyrophosphate and the like.
As the ceramic industry continuously uses high-quality porcelain clay, the high-quality clay resource is more and more deficient, the ceramic industry has to use clay containing more barren materials for producing various ceramic products due to the non-regenerability of the high-quality porcelain clay, however, the produced products have the defects of cracks, broken corners, edge defects and the like due to the inherent deficiency of the materials, and the ceramic body reinforcing agent is an additive used for overcoming the defects and mainly comprises sodium carboxymethylcellulose, modified starch, bentonite and the like.
The existing ceramic enterprises add the debonding agent and the reinforcing agent at the same time, so that the quality of ceramic production is improved, and the requirement of the ceramic industry on the ceramic additive with more complete functions is more urgent. In the traditional technology, the additive for the ceramic slurry with the effects of enhancing and reducing water simultaneously provides the effects of enhancing and reducing water for the ceramic slurry, and simultaneously can thicken the slurry, thereby influencing the fluidity of the slurry, being not beneficial to the delivery of the slurry and increasing the energy consumption.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a solid dispergation reinforcing agent which can reduce the water content of slurry, improve the suspension property of the slurry, provide the reinforcing and water reducing effects for ceramic slurry and increase the fluidity of the slurry during the preparation of ceramic.
The second purpose of the invention is to provide a preparation method of the solid dispergation reinforcing agent.
One of the purposes of the invention is realized by adopting the following technical scheme:
a solid dispergation reinforcing agent comprises the following components in parts by weight:
15-30 parts of a debonding agent;
10-20 parts of ester substances with hydrophilic and lipophilic groups;
1-5 parts of cationic polymer;
1-3 parts of polyethylene glycol;
the debonder is one or a composition of more than two of organic matters of sodium polyacrylate, potassium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate, sodium silicate, potassium silicate, sodium carbonate, potassium carbonate, sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium ethylene diamine tetracetate, sodium hydroxyethylethylenediamine triacetate, polyvinyl alcohol and polycarboxylic acids.
Further, the ester substance with the hydrophilic and lipophilic groups is prepared by mixing the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate. The propylene glycol alginate has a double group of hydrophilic group hydroxyl and lipophilic group ester group, is easy to react with the hydroxyl on the surface of mud clay, so that the surface of the mud becomes lipophilic, the expansion of the mud in water is inhibited, so that the suspension property of the mud is improved, meanwhile, the propylene glycol alginate also has a seaweed acid functional group, the alginic acid is a straight-chain block polyuronic acid, and the alginic acid is formed by connecting a homopolymerized alpha-L-guluronic acid block, a homopolymerized beta-D-mannopyranouronic acid block and a cross-polymerized block of the two uronic acids by 1, 4-glycosidic bonds, has the characteristics of water absorption, expansion and recovery after drying and the like, so that water is provided for the mud in the ball milling or pulping process, so that the flowing property of the mud is improved. The 1, 2-propylene carbonate is decomposed during high-temperature sintering due to the special carbonate structure and then reacts with the propylene glycol alginate to form a three-dimensional structure, so that the hardness and the breaking strength of the ceramic are improved.
Further, the ester substance with the hydrophilic and lipophilic groups is prepared by mixing the following components in a mass ratio of 1: 1-2 of propylene glycol alginate and dimethylaminoethyl methacrylate. The molecules of the dimethylaminoethyl methacrylate contain functional groups such as tertiary amino, ester groups, unsaturated double bonds and the like, and can be well matched with ether bonds on the molecular surface of the polyethylene glycol to form steric hindrance through intermolecular force, so that slurry can be dispersed. When the ceramic is sintered at high temperature, the ceramic reacts with propylene glycol alginate to form a three-dimensional structure so as to improve the hardness and the breaking strength of the ceramic.
Further, the cationic polymer is one or two of aluminum hydroxide and zirconium hydroxide. The hydroxyl aluminum and the hydroxyl zirconium are polynuclear hydroxyl bridged ions and have high positive electrovalence, so that the hydroxyl aluminum and the hydroxyl zirconium can be tightly adsorbed on the surface of mud clay, the mud swelling and the particle movement are effectively controlled, and meanwhile, the cationic polymer can be matched with the weak negative charge of ether bonds on the molecular surface of the polyethylene glycol to adsorb the polyethylene glycol on the mud, so that the mud suspension property is enhanced. When high-temperature sintering is carried out, zirconium oxide and aluminum oxide are generated, and the hardness and the high-temperature resistance of the rock plate can be improved.
Further, the molecular weight of the polyethylene glycol is 200-300. The low molecular weight polyethylene glycol can be used as a wetting agent and a consistency regulator, and can adjust the flowing property of the liquid dispergation reinforcing agent.
Further, the mass ratio of the debonder to the ester substance with the hydrophilic and lipophilic groups is 1: 0.8-1.
Further, the mass ratio of the cationic polymer to the ester substance with the hydrophilic and lipophilic groups is 0.1-0.5: 1.
further, the mass ratio of the polyethylene glycol to the ester substance with the hydrophilic and lipophilic groups is 0.1-0.5: 1.
the second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding an ester substance with hydrophilic and lipophilic groups, and uniformly stirring to obtain a first mixture;
s2: adding a cationic polymer into the first mixture, and uniformly stirring to obtain a second mixture;
s3: and adding the dispergator into the second mixture, uniformly stirring, and then carrying out spray drying to obtain the solid dispergation reinforcing agent.
Further, in step S1, the stirring speed is controlled to be 10r/min-20r/min, and the stirring time is 30min-50 min; in step S2, the stirring speed is controlled to be 20r/min-30r/min, and the stirring time is 15min-30 min; in step S3, the stirring speed is controlled at 10r/min-20r/min, the stirring time is 1min-3min, the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature is 60-80 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the solid dispergation reinforcing agent is compounded by adopting the dispergation agent, the ester substance with the hydrophilic and lipophilic groups, the cationic polymer and other materials, and the dispergation effect of the dispergation agent is enhanced through the action of the ester substance with the hydrophilic and lipophilic groups and the cationic polymer, so that the water content of slurry can be reduced during the preparation of ceramics, the suspension property of the slurry is improved, the reinforcing and water reducing effects are provided for the ceramic slurry, and meanwhile, the fluidity of the slurry can be increased.
The preparation method of the invention has simple preparation process, and the effect of the solid peptization reinforcing agent is better exerted by controlling the adding sequence of the materials.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
The invention provides a solid dispergation reinforcing agent which comprises the following components in parts by weight:
15-30 parts of a debonding agent; 10-20 parts of ester substances with hydrophilic and lipophilic groups; 1-5 parts of cationic polymer; 1-3 parts of polyethylene glycol.
Specifically, the debonder is one or a composition of more than two of organic matters of sodium polyacrylate, potassium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate, sodium silicate, potassium silicate, sodium carbonate, potassium carbonate, sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium ethylene diamine tetracetate, hydroxyethyl ethylenediamine triacetate, polyvinyl alcohol and polycarboxylic acids; the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate. The propylene glycol alginate has a double group of hydrophilic group hydroxyl and lipophilic group ester group, is easy to react with the hydroxyl on the surface of mud clay, so that the surface of the mud becomes lipophilic, the expansion of the mud in water is inhibited, so that the suspension property of the mud is improved, meanwhile, the propylene glycol alginate also has a seaweed acid functional group, the alginic acid is a straight-chain block polyuronic acid, and the alginic acid is formed by connecting a homopolymerized alpha-L-guluronic acid block, a homopolymerized beta-D-mannopyranouronic acid block and a cross-polymerized block of the two uronic acids by 1, 4-glycosidic bonds, has the characteristics of water absorption, expansion and recovery after drying and the like, so that water is provided for the mud in the ball milling or pulping process, so that the flowing property of the mud is improved. The 1, 2-propylene carbonate decomposes during high-temperature sintering due to the special carbonate structure and then reacts with the propylene glycol alginate to form a three-dimensional structure, so that the hardness and the breaking strength of the ceramic are improved.
In another embodiment, the ester substance with hydrophilic and lipophilic groups is prepared by mixing the following components in a mass ratio of 1: 1-2 of propylene glycol alginate and dimethylaminoethyl methacrylate. The molecules of the dimethylaminoethyl methacrylate contain functional groups such as tertiary amino, ester groups, unsaturated double bonds and the like, and can be well matched with ether bonds on the molecular surface of the polyethylene glycol to form steric hindrance through intermolecular force, so that slurry can be dispersed. When the ceramic is sintered at high temperature, the ceramic reacts with propylene glycol alginate to form a three-dimensional structure so as to improve the hardness and the breaking strength of the ceramic.
Further, the cationic polymer is one or two of aluminum hydroxide and zirconium hydroxide. The hydroxyl aluminum and the hydroxyl zirconium are polynuclear hydroxyl bridged ions and have high positive electrovalence, so that the hydroxyl aluminum and the hydroxyl zirconium can be tightly adsorbed on the surface of mud clay, the mud swelling and the particle movement are effectively controlled, and meanwhile, the cationic polymer can be matched with the weak negative charge of ether bonds on the molecular surface of the polyethylene glycol to adsorb the polyethylene glycol on the mud, so that the mud suspension property is enhanced. When high-temperature sintering is carried out, zirconium oxide and aluminum oxide are generated, and the hardness and the high-temperature resistance of the rock plate can be improved.
The molecular weight of the polyethylene glycol is 200-300. The low molecular weight polyethylene glycol can be used as a wetting agent and a consistency regulator, and can adjust the flowing property of the liquid dispergation reinforcing agent.
In one embodiment, the mass ratio of the debonder to the ester substance with the hydrophilic and lipophilic groups is 1: 0.8 to 1; the mass ratio of the cationic polymer to the ester substance with the hydrophilic and lipophilic groups is 0.1-0.5: 1; the mass ratio of the polyethylene glycol to the ester substance with the hydrophilic and lipophilic groups is 0.1-0.5: 1. the overall performance, such as dispersibility, can be effectively improved only in a proper proportion of the materials.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding an ester substance with hydrophilic and lipophilic groups, and uniformly stirring to obtain a first mixture;
s2: adding a cationic polymer into the first mixture, and uniformly stirring to obtain a second mixture;
s3: and adding the dispergator into the second mixture, uniformly stirring, and then carrying out spray drying to obtain the solid dispergation reinforcing agent.
Further, in step S1, the stirring speed is controlled to be 10r/min-20r/min, and the stirring time is 30min-50 min; in step S2, the stirring speed is controlled to be 20r/min-30r/min, and the stirring time is 15min-30 min; in step S3, the stirring speed is controlled at 10r/min-20r/min, the stirring time is 1min-3min, the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature is 60-80 ℃.
The solid dispergation reinforcing agent is compounded by adopting the dispergator, the ester substance with the hydrophilic and lipophilic groups, the cationic polymer and other materials, and the dispergation effect of the dispergator is enhanced through the effects of the ester substance with the hydrophilic and lipophilic groups and the cationic polymer, so that the water content of slurry can be reduced during the preparation of ceramics, the slurry suspension property is improved, the enhancement and water reduction effects are provided for the ceramic slurry, and meanwhile, the fluidity of the slurry can be increased.
The application method of the solid dispergation reinforcing agent comprises the following specific operations: ball milling or pulping or molding is carried out on the ceramic blank and the raw materials according to 0.02-0.3 percent of the dry material amount of the ceramic blank.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified. In the following examples, the molecular weight of the polyethylene glycol was 200.
Example 1
A solid dispergation reinforcing agent comprises the following components in parts by weight:
15 parts of sodium citrate; 10 parts of ester substance with hydrophilic and lipophilic groups; 1 part of cationic polymer; and 1 part of polyethylene glycol. Wherein the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate, and the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
Example 2
A solid dispergation reinforcing agent comprises the following components in parts by weight:
22 parts of sodium citrate; 15 parts of ester substance with hydrophilic and lipophilic groups; 3 parts of cationic polymer; 2 parts of polyethylene glycol. Wherein the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate, and the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
Example 3
A solid dispergation reinforcing agent comprises the following components in parts by weight:
30 parts of sodium citrate; 20 parts of ester substances with hydrophilic and lipophilic groups; 5 parts of cationic polymer; 3 parts of polyethylene glycol. Wherein the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate, and the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
Example 4
A solid dispergation reinforcing agent comprises the following components in parts by weight:
16 parts of sodium citrate; 16 parts of ester substance with hydrophilic and lipophilic groups; 3 parts of cationic polymer; 2 parts of polyethylene glycol. Wherein the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 0.5-0.8 of propylene glycol alginate and 1, 2-propylene glycol carbonate, and the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
Example 5
A solid dispergation reinforcing agent comprises the following components in parts by weight:
16 parts of sodium citrate; 16 parts of ester substance with hydrophilic and lipophilic groups; 3 parts of cationic polymer; 2 parts of polyethylene glycol. Wherein the ester substance with the hydrophilic and lipophilic groups is prepared from the following components in a mass ratio of 1: 1-2 of propylene glycol alginate and dimethylaminoethyl methacrylate, and the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
In the above embodiments, the materials are not limited to the above components, and may also be other single components or multiple components described in the present invention, for example, the debonding agent is one or a combination of two or more of sodium polyacrylate, potassium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate, sodium silicate, potassium silicate, sodium carbonate, potassium carbonate, sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium ethylene diamine tetracetate, sodium hydroxyethylethylenediamine triacetate, polyvinyl alcohol, and polycarboxylic organic matter, and the component parts of each material are not limited to the above parts, and may also be a combination of other component parts described in the present invention, and are not repeated herein.
Comparative example 1
A solid dispergation reinforcing agent comprises the following components in parts by weight:
15 parts of sodium citrate; 1 part of cationic polymer; and 1 part of polyethylene glycol.
Wherein the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding cationic polymer, stirring uniformly at 20-30 r/min for 15-30 min to obtain a mixture;
s2: adding sodium citrate into the mixture, stirring uniformly, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, then spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature is 60-80 ℃, thus obtaining the solid peptization reinforcing agent.
Comparative example 2
A solid dispergation reinforcing agent comprises the following components in parts by weight:
15 parts of sodium citrate; 10 parts of propylene glycol alginate; 1 part of cationic polymer; and 1 part of polyethylene glycol. Wherein the cationic polymer is aluminum hydroxide.
The preparation method of the solid dispergation reinforcing agent comprises the following preparation steps:
s1: dissolving polyethylene glycol in water, adding ester substance with hydrophilic and lipophilic groups, stirring uniformly at a speed of 10-20 r/min for 30-50 min to obtain a first mixture;
s2: adding the cationic polymer into the first mixture, and uniformly stirring, wherein the stirring speed is controlled to be 20-30 r/min, and the stirring time is 15-30 min, so as to obtain a second mixture;
s3: and adding sodium citrate into the second mixture, uniformly stirring, controlling the stirring speed at 10r/min-20r/min, stirring for 1min-3min, and then carrying out spray drying, wherein the air inlet temperature in the spray drying process is 120-150 ℃, and the air outlet temperature in the spray drying process is 60-80 ℃, so as to obtain the solid peptization reinforcing agent.
And (3) performance testing:
(1) test product
Examples 1 to 5 and comparative examples 1 to 2.
(2) Experimental methods
According to the using method provided by the invention, the raw materials are pulped together according to 0.03% of the dry material amount of the blank to prepare slurry.
Slurry fluidity test: pouring the prepared slurry into a 100ml daubing-4 cup, standing for 3S, recording the time for the slurry to completely flow out by using a stopwatch, controlling the temperature of the slurry at 25 ℃, and taking the average value of three measurements to obtain the flow rate of the slurry.
And (3) testing the breaking strength of the finished product: preparing the slurry into a finished product test piece according to the traditional preparation process, and preparing the finished product test piece into a specification of 12 x 4 x 2, wherein the width error and the height error are not more than 0.1cm, the length error is not more than 1mm, and the upper surface and the lower surface in the hand are required to be processedThe two adjacent surfaces are parallel and perpendicular to each other, and no visible crack is allowed on the test piece; then placing the test piece on two fixed supporting points, applying concentrated load on the middle point of the test piece until the test piece is destroyed, and obtaining the breaking strength of the ceramic by an elastic mechanical method; the formula of the flexural strength of the ceramic isWherein R isbThe flexural strength of the test piece is MPa; p is the test piece failure load, N; l is fulcrum span, mm; b is the width of the test piece, mm; h is the height of the test piece, mm.
(3) The test results are given in table 1 below.
TABLE 1 test results
Item
Fluidity(s)
Flexural strength (MPa)
Blank example
46.8
30.8
Comparative example 1
47.5
30.9
Comparative example 2
45.9
31.4
Example 1
44.6
32.6
Example 2
43.8
32.5
Example 3
44.5
32.9
Example 4
44.9
33.4
Example 5
45.1
33.3
As can be seen from the data in Table 1, compared with comparative examples 1-2, the fluidity of the ceramic slurry can be significantly improved by using a small amount of the debonder of the present invention, and the impact on the flow rate of the slurry is small while the flexural strength of the finished product is increased.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
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